Arrive with empty lorry? That's fair (6)
I believe the answer is:
comely
'fair' is the definition.
(I know that fair can be written as comely)
'arrive with empty lorry?' is the wordplay.
'arrive' becomes 'come' (coming is a kind of arriving).
'with' is a charade indicator (letters next to each other).
'empty' says to hollow out the word (remove centre letters).
'lorry' with its middle removed is 'ly'.
'come'+'ly'='COMELY'
'that's' acts as a link.
(Other definitions for comely that I've seen before include "Very pleasing to the eye, as Dev's maidens perhaps" , "Quite good-looking" , "Archaic word for good-looking, say maidens" , "Fair (but not lovely!)" , "Old word for good-looking, say a lass" .)